An accountant purchases a car for $13,200. He made a down payment of $2,640. The sales tax is 4% of the purchase price. Find the cost for the sales tax and the down payment. A. $3,618 B. $3,062.40 C. $3,168 D. $528

I think it's c hope it help if I get it wrong I am so sorry

3

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb